什麼原因導致com.aerospike.client.AerospikeException：java.io.EOFException？

Question

這是什麼原因？

com.aerospike.client.AerospikeException: java.io.EOFException 
    at com.aerospike.client.async.SelectorManager.processKey(SelectorManager.java:184) [aerospike-client-3.0.24.jar:?] 
    at com.aerospike.client.async.SelectorManager.runCommands(SelectorManager.java:108) [aerospike-client-3.0.24.jar:?] 
    at com.aerospike.client.async.SelectorManager.run(SelectorManager.java:69) [aerospike-client-3.0.24.jar:?] 
Caused by: java.io.EOFException 
    at com.aerospike.client.async.AsyncConnection.read(AsyncConnection.java:127) ~[aerospike-client-3.0.24.jar:?] 
    at com.aerospike.client.async.AsyncSingleCommand.read(AsyncSingleCommand.java:48) ~[aerospike-client-3.0.24.jar:?] 
    at com.aerospike.client.async.SelectorManager.processKey(SelectorManager.java:164) ~[aerospike-client-3.0.24.jar:?] 
    ... 2 more 

Answer 1

當套接字連接不再有效時引發EOFException。通常會發生這種情況，因爲服務器已關閉連接。

/** 
* Read till byteBuffer limit reached or received would-block. 
*/ 
public boolean read(ByteBuffer byteBuffer) throws IOException { 
    while (byteBuffer.hasRemaining()) { 
     int len = socketChannel.read(byteBuffer); 

     if (len == 0) {   
      // Got would-block. 
      return false; 
     } 

     if (len < 0) { 
      // Server has shutdown socket. 
       throw new EOFException(); 
     } 
    } 
    return true; 
}